Spectacle and eyeglass mounting.



SPECTACLE AND EYEGLASS MOUNTmm APPucAloN HLED MAR. 3Q. w16.

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i PAUL I-I. JOHNSTON, 0F DAVENPORT, IOWA.

SPECTACLE AND EYEGLASS MUNTING.

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To all 'whom t may concern:

Be it known that l, PAUL H. JOHNSTON, a citizen of the United States, and a resident of Davenport, in the county of Scott and State of `lowa, have invented certain new and useful Improvements in Spectacle and Eyeglass Mountings, of which the following is a full, clear, and exact description.

My invention relates to mountings for the lens ofspectacles, eyeglasses, eye-protectors, and the like, and more particularly to means whereby a quick, `dependable and easily detached connection may be made between the lens and the lens-box of the mount.- g "4' One of'- the objects of my present invention is the provislon in a niount` of means j box just described, lprefer-to place a shalwhereby lenses of divers thicknesses or curvatures may be accommodated between the clamping ears of the lens-box. `Another object' `of my invention is the provision of means on the lens or integral therewith whereby the member adapted to engage and Lock the lens between the ears will firmly engage the same. Still another object of my invention is to provide a lens with a depression or recess that'may be made ma simple manner and at Jthe same time avoid the necessity for boring entirely through the lens.

These and further objects ll prefer to accomplish by the means and in the manner hereinafter fullydescribed and as more particularly pointed out in the claims, reference being had to the accompanying drawings forming a part of this specification, wherein,

Figure 1 is a side elevation of the lenssecuring portion of a lens-mount constructed in accordance with my invention.

Fig. 2 is a longitudinal vertical section thereof taken on line 2 2, Fig. 6.

Fig. 3 is a fragmentary view of the surface of' a lens provided with a depression or recess made in accordance with my invention.

Fig. 4 is a fragmentary perspective view of a portion of a lens-box showing the parts about to be assembled.

Fig. 5 is a sectional view similar to Fig. 2 showing my improved lens-box or mount secured to a lens having a convex surface.

Fig. 6 is a transverse vertical section taken on line 6-6, Fig. 2.

Referring to the drawings, it will be observed ll have illustrated, for the sake of simplicity, the portion of a lens mount Specification of Letters Patent. i A

Application led March 30, 1916.` Serial No. 87,709.

is provided ratenteu nee. i, iai t.

adapted t0 connect with a temple, but it is lobvious that this same lens connecting structure may be used at all parts of amounting which `make connection with theflens. My improved mount preferably comprises the usual stud 10 that is provided with knuckles or lugs 11 at one end and at its opposite cud with oppositely extending straps 12, 12, that are adapted to engage a portion of the perimeter of the lens. Suitable parallel lens-ears 13, 13, project from the stud at a point intersecting the straps 12 and preferably alining with said stud 10, so that they are adapted to engage opposite surfaces of the lens 14 adapted to be fitted and secured between the same. l

In order to'secure the lens 111 in the lens low indentation, depression` or recess in one of the surfaces of the lens, said recess being formed bya grinding toolA of substantially conical outline so that the recess is formed with the base 15 of the cone disposed at substantially right-angles to the surface of the lens in which the recess is made and adjacent the periphery of the lens, while the conical surface 16 of the recess inclines upwardly from the bottom of the base 15 to the surface of the lens, as shown in Fig. 6 of 85 the drawings. The recess is so positioned with relation lto the edge of the lens that it is adapted to receive and seat the adjacent end ofl a suitable flexible spring latch carried by the lens-box.

The latch just alluded to comprises a strip of spring metal bent to the shape shown in the drawings and has one of its arms 17 secured to the lens-box in any suitable manner, preferably by insert-in it through a hole formed in the shank o the stud 10 and swaging its extended end to provide a head 18. The remaining portion 19 of the latch extends along the outer surface ,of the adjacent ear 13 and has its outer end 100 fit the recess inserting the lens between the ears'an'd 61- initting the engaging.. member 20 of the spring latch to snap into p osition lthe recess in the surface of the lens. Hvvey'fer7 i' Vithvvyill frequently `be follld that the lenses vary in tliiclr'ie'sys 'and siirface curvature and in order to take care ofthis, contingency and permit the mounting to lit tightly and firmly to the lens being mounted I. have uprovided a ,suitableshim or `block -.23 Athat is adapted to be disposed betweenthe'- ear `opposite tlieglatchand the adjacent lenssurface. plate corresponding upon one,surface\ vith 15 This shim preferably comprisesa the contour .of the ,lenscar of the mounting and.-is provided with a laterally projecting :tenonpor rib l24 that is adapted to. lit into a vcorre's1'3oiiding groove orrecess 25 niadein the adjacentl surface of the lens ear. The

oppositeisurfaoe of the shim 23 is either plain or 'is ,curved .as shown in Fig. 5 to' coiiform vvith the surface `of the lens Whichit is desired to mountk and thus permita lens having a curved surface 26 to .be fitted inthe boit in'which latter event the shim will be substantially Wedge-shaped in longitudinal section 'as illustrated.

Y Thus it will be seen that the optician need lonly provide 'himself vvith a comparatively few Vsizes of vlens-boxes and can keep in. stock a large number of shiins "of divers thicknesses and surface contour vvhich `are coinv-p'aratively ..inexpensive, thus avoiding the certain vspecific means copie ef this patent iay be obtained fer Y. Signed at.

'arting from the spirit of my invention. *or example, Athe shim inay be provided )vith an indentation or groove that is engaged by a protruding member or rib on the engaging ear of the lens-box, or the engagparts may be plain. l therefore desire understoodthatall such obvious changes are contemplated as coming Within the scope of my invention as expressed in the appendedclams- 'i What Ilam isz-f 1,

In a lensinount in combination .with a lens-box provided `with earsadapted to be disposed uponopposite Vsurfaces of a lens, of a block coacting With the inner surface 'of one of 's aidears /anqtadapted tounodify the and shape of the opening betiveen said ears availableforthe insertion of a lens, a spring latch vextendinginto the space between' said ears, anda lens havinga conical recess in. o`n e of its si irf ac es adapted to re- Ceive said latch, whereby the lens `is pressed against said block and its copeiatingA ear ,andis Asecured against Withdrawal from between 'saideaijs 2.,A- spectacle oreyeglass in'ouiliting coinprising a lens, a boxprovidedrwitli aineinber eXtendednpon one face of said lens, a sepalate integral spring inenibcrneairied by l'said bojX and adapted to engage the face of saidlens directly opposite said first-niention'ed ineniber, and a block .interposed between said lens and said first-mentioned member against Which said lellS is adapted to be pressed by said spring member.

Ciicajgo, county of Coolrand State of Illinois, this 27th day of March 1916.

t.. PAUL H. JOHNSTON. VVitness'es l BnNJ, T. RooDHoUsE, WM. HAROLD EioHnLMAN.

inge ,dents ,by addressing the 'Comiiiissioiiei 4oit Patents, Washington, D. C. 

